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Video: Peb tus yam ntxwv dav dav ntawm cov hlau yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Peb yam ntxwv ntawm cov hlau yog lawv zoo conductivity, malleability, thiab ci iab tsos. Hlau yog cov conductors zoo ntawm tshav kub thiab hluav taws xob, Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog cov yam ntxwv ntawm cov hlau?
Cov hlau yog lustrous, malleable, ductile, zoo conductors ntawm kub thiab hluav taws xob. Lwm yam khoom muaj xws li: Lub Xeev: Cov hlau yog cov khoom nyob rau hauv chav tsev kub, tshwj tsis yog cov mercury, uas yog kua nyob rau hauv chav tsev kub (Gallium yog kua rau hnub kub).
Tsis tas li ntawd, dab tsi yog qhov tsis zoo ntawm cov hlau? Cov platinum, palladium, kub, thiab nyiaj yog cov tshuaj tiv thaiv qis heev. Cov hlau feem ntau yog malleable thiab ductile nyob rau hauv qhov uas txhais tau tias lawv tuaj yeem hloov mus rau hauv cov hlau thiab ntawv. Cov tshuaj nkig ua tsis yog muaj cov no yam ntxwv thiab yog li ntawd, brittleness yog tsis yog tus yam ntxwv ntawm hlau.
Cov lus nug tseem yog, dab tsi yog 5 yam ntxwv ntawm cov hlau?
- Cov khoom siv hluav taws xob zoo thiab cov khoom siv hluav taws xob zoo.
- Malleable - tuaj yeem raug ntaus rau hauv cov ntawv nyias.
- Ductile - tuaj yeem ncab rau hauv cov hlau.
- Muaj cov hlau nplaum.
- Opaque raws li daim ntawv nyias.
- Khoom ntawm chav tsev kub (tshwj tsis yog Hg).
Dab tsi yog 10 yam khoom ntawm cov hlau?
10 PHAU NTAWV QHIA TXOG HUAB TAIS
- Cov hlau yog malleable: - Tag nrho cov hlau tuaj yeem raug ntaus rau hauv cov ntawv nyias nrog rauj xws li. kub, nyiaj aluminium thiab lwm yam.
- Cov hlau yog ductile: - Cov hlau tuaj yeem ncab mus rau hauv cov xov hlau nyias.
- Cov hlau yog cov conductors zoo ntawm tshav kub thiab hluav taws xob: - Tag nrho cov hlau yog cov conductors zoo ntawm tshav kub.
Pom zoo:
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Cov yam ntxwv twg ntawm cov hlau atoms pab piav qhia vim li cas valence electrons hauv cov hlau yog delocalized?
Ib daim ntawv cog lus hlau yog kev sib koom ntawm ntau cov khoom siv hluav taws xob sib cais ntawm ntau cov ions zoo, qhov twg cov electrons ua raws li 'cov kua nplaum' muab cov khoom tsim nyog. Nws tsis zoo li covalent lossis ionic bonding. Cov hlau muaj zog ionization tsawg. Yog li ntawd, valence electrons tuaj yeem raug delocalized thoob plaws hauv cov hlau
Dab tsi yog qhov txhais cov yam ntxwv ntawm peb chav kawm loj ntawm isomers?
Isomers yog cov tebchaw nrog tib cov qauv molecular tab sis txawv cov qauv tshuaj thiab kev ua haujlwm. Tej zaum koj yuav tau kawm tias muaj peb hom isomers - qauv thiab geometric isomers thiab enantiomers - thaum tiag tiag tsuas muaj ob hom (cov qauv thiab stereoisomer) thiab ob peb subtypes
Dab tsi yog cov yam ntxwv ntawm cov hlau nyob rau hauv lub sij hawm?
Lawv yog cov khoom (tshwj tsis yog mercury, Hg, kua). Lawv ci ntsa iab, zoo conductors ntawm hluav taws xob thiab cua sov. Lawv yog cov ductile (lawv tuaj yeem kos rau hauv cov xov hlau nyias). Lawv yog cov malleable (lawv tuaj yeem yooj yim hammered rau hauv cov ntawv nyias nyias)
Peb lub neej yog dab tsi thiab lawv cov yam ntxwv tshwj xeeb yog dab tsi?
Peb lub npe suav nrog: Archaea - cov npe qub tshaj plaws, cov kab mob qub. Cov kab mob - tag nrho lwm cov kab mob uas tsis suav nrog hauv Archaea domain. Eukarya - tag nrho cov kab mob uas muaj eukaryotic los yog muaj cov kab mob sib txuas thiab cov nuclei